Harry b



(No Model.)

H. B. OBERLIN.

ROLLER JEWEL REMOVBR FOR WATCHES.

No. 540,683. Patented June 11, 1895.

U ITED STATES PATENT" OFFICE.

HARRY B. OBERLIN, OF COLUMBIA, PENNSYLVANIA.

ROLLER JEWEL REMOVER Fold WATCHES.

' SPECIFICATION forming part of Letters Iatent No. 540,683, dated June 11, 185 5. Application filed 0mm 25.1894- Serialhlo. 626,919. (No model.)

To all whom it may concern:

Be it known that I, HARRY B. OBERLIN, a citizen of the United States of America, residing at Columbia, in the county of Lancaster and State of Pennsylvania, have invented new and useful Improvements in Roller Removing Devices for Watch Balance-Wheels, of which the following is a specification.

This invention relates to improvements in roller removing devices for watchmakers, that is, to means for facilitating the removal and also the replacement of the roller, as termed, which is the disk carrying the jewel against which the balance-wheel propelling lever operates and which fits tightly on the staff of the balance-wheel at the opposite side of such wheel from that at which is set the hair-springcollet. Y

The object of the invention is to devise an appliance for the purpose mentioned which shall possess advantages which will be hereinafter set forth or rendered manifest.

The invention consists in constructions and combinations of parts all substantially as will hereinafter fully appear and be set forth in the claims.

Reference is to be had to the accompanying drawings, in which- Figure 1 is a perspective view of the improved roller-removing support for the balance-wheel employed in conjunction with a staking-tool. Fig. 2 is a perspective view of the roller-removing support on a larger scale, showing the position of the balance-wheel as in place ready to have the roller thereof removed from its staif.

Describing the novel appliance, in detail, A represents the bed, or base-plate, and B the horizontaltop-plate supported thereabove by the pillars, mo, leaving the open space between them. The top-plate has the edgewise opening slot, 17, and the rabbet-like depression, cl, within its top surface and surrounding the said slot. The base-plate has near its forward edge the depending stump, f, which is axially in a line which intersects the inner portion of the area of the said slot, 1), in the top-plate. Said stump has the hole/f therein which opens to the top of the plate, A. This appliance is most advantageously used in conjunction with a staking-tool, such as shown in Fig. 1, having the rotary bed, 10, with the perforations, or sockets, 12, therein of varying sizes, any of which may be brought around centrally under the punch, 15.

Now to remove a roller, 20, from the staif, 22, of the balance-wheel, w, the balance-wheel is placed under the top-plate, B, as seen in Fig. 1, with the said roller resting on the base of the rabbet-like depression, d, while the portion of the staff between the roller and the balance-wheel is accommodated within the slot, 1). The stump,f, by fitting in one of' the perforations, 12, of the bed of the stakingtool, serves to bring the slot, b, properly under the punch, so that, relative to the punch, the staff of the balance wheel, when brought within the slot, may be subject to the forcing action of the punch whereby the staff may be forced downwardly out from connection with the roller, the latter remaining within the depression, 5, while the balance wheel and staff,

necessarily descend; and such descent is perthe part of the top-plate at which is the edgewise opening slot, I), must be comparatively thin to permit the balance, as a whole, to .be

slid into the engagement shown in Fig. 2, and this is permitted by reducing or rabbeting, as seenatd, for an area about the slot not very much greater than the diameter of the roller which does not materially impair the stability of the supportingtop-plate, B, which, except at the slotted and reduced part, is of such substantial thickness as to impart the necessary rigidity to the support as a whole.

When the appliance is to be utilized for connecting the balance staff and roller, the

roller is placed in the base of the recess with the jewel, 25, depending through the slot, 1). The staff is then placed in the hole in the roller with the balance wheel and hair-spring above the plate, when the punch, 15, drives the staff tightly into the roller.

IOO

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

1. The support foraroller-removing device, substantially as herein described, which consists of a baseplate having a depending stump with an aperture therein which opens to the upper side of the base-plate, and a topplate supported by and above the base-plate and having the edgewise opening slot, 1), and the rabbet-like depression, d, within its top surrounding said slot, for the purpose substantially as set forth.

2. The support for a roller-removing device consisting of a base-plate having the hollow depending stump, f, and the top-plate sup- HARRY B. OBERLIN.

Witnesses:

F. P. D. MILLER, GEO. D. MILLER. 

